I'm reading Kraken: The Curious, Exciting, and Slightly Disturbing Science of Squid by Wendy Williams. Learned that cephalopods have blue blood because it's copper-based instead of iron-based like mammalian blood. Is this sort of thing interesting to other people? I am a treasure trove of useless knowledge.

Everything about squid is interesting to me. I love cephalopods of all varieties! Here's a sadder one: most/all octopi species invariably develop dementia as they age, and die due to inability to care for themselves rather than their body breaking down.

JACK COHEN - the biologist who specialiss in Animal Sexuality Has done experiments on Octopuses generally & concludes their about as intelligent as Dogs. Theorises that their locket into a biologica;l ded end as they have no society at all (just 10 minutes contact when mating